All predators will climb a fence go under a fence and through a fence if they can..Huh ya it is a lot of snow l didn't put a door on because he is fenced in should l ?
I'd also cut some ventilation holes and put hardware cloth over them to keep good air flow in his house Ammonia can build up pretty quick the ventilation should be up high enough that wind doesn't come through and blow right over him.
@BBCHICKS123